Astronomy and Astrophysics – Astrophysics
Scientific paper
2001-01-02
Astrophys.J. 550 (2001) 368-371
Astronomy and Astrophysics
Astrophysics
10 pages (AAS Latex macros v5.0.2), 2 eps figures. The Astrophysical Journal (accepted)
Scientific paper
10.1086/319707
Recently Fuller & Shi proposed that the gravitational collapse of supermassive objects ($M \gtrsim 10^4M_\odot$) could be a cosmological source of $\gamma$-ray bursts (GRBs). The major advantage of their model is that supermassive object collapses are far more energetic than solar mass-scale compact mergers. Also, in their proposal the seeds of supermassive black holes (SMBHs) thus formed could give rise to the SMBHs observed at the center of many galaxies. We argue here that, besides the generation of GRBs, there could well occur a strong generation of gravitational waves (GWs) during the formation of SMBHs. As a result, the rate of such GW bursts could be as high as the rate of GRBs in the model by Fuller & Shi. In this case, the detection of GRBs and bursts of GWs should occur with a small time difference. We also argue that the GWs produced by the SMBHs studied here could be detected when the Laser Interferometric Space Antenna (LISA) becomes operative.
Aguiar Odylio Denys
de Araujo Jose Carlos N.
Miranda Oswaldo D.
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